If it's the same as the Focus , then lift the cover above the steering column , there you should see two Usually T20 hex screws , remove then , drop the steering wheel down and pull on the cluster , it should come out and then un-clip the wiring

The bit of dash trim above the steering wheel below the clocks, pull it directly towards you, that reveals 2 screws you need to take out.

At the top of the clocks, the 'ceiling' in front of your trip computer has a round circle cover that can be levered out with a tiny flat head screwdriver. That's the 3rd screw under there that you need to take out.

Yh just plugged it all back in started the car and then adjusted them as it needed to be, also toke the car for a drive and tested the speed against my tom tom and its a lot closer now used to be around 5-8mph out but dead on nearly now happy with it